Dual-light lens car lamp

Abstract

The invention provides a double-light-lens vehicle lamp which comprises a first heat dissipation support, a low beam module and a high beam module which are arranged on the same side of the first heat dissipation support, a shading device corresponding to light outlets of the low beam module and the high beam module, and a second heat dissipation support arranged in front of the first heat dissipation support along a light path. The high-beam module comprises a high-beam light source and a high-beam reflection cup, the high-beam reflection cup comprises an elliptical surface and a spherical surface which are sequentially arranged in the direction from the vertex to the light outlet, one focus of the elliptical surface coincides with the sphere center of the spherical surface, and the other focus of the elliptical surface coincides with the sphere center of the spherical surface. The position of the high-beam light source corresponds to the center of sphere of the spherical surface, one part of light emitted by the high-beam light source is reflected by the elliptical surface and then is emitted to form high-beam light, and the other part of light is reflected by the spherical surface and then returns to the light source surface of the high-beam light source for re-excitation. By arranging the high-beam reflection cup comprising the elliptical surface and the spherical surface, the luminance of the high-beam light source can be improved, the distance between the high-beam light source and the lens unit is reduced while the size of the high-beam reflection cup is not reduced, and the overall length of the automobile lamp is reduced while the reliability of the automobile lamp is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of automobile lighting, and in particular to a dual-light lens automobile lamp. Background Art

[0002] The existing dual-light lens headlights and existing LED high and low beam integrated automobile headlights have a structure such as Figure 1 As shown, it includes a low-beam LED light source module 1, a high-beam LED light source module 2 and a lens 4. The low-beam LED light source module 1 and the high-beam LED light source module 2 are arranged on the upper and lower sides of the same heat dissipation substrate, and the positions of the low-beam LED light source module 1 and the high-beam LED light source module 2 on both sides of the heat dissipation substrate are basically overlapped or very close. Due to the limitation of the brightness of the current LED light source, there is usually a problem of obviously insufficient central illumination. In the prior art, a low-beam module and a high-beam module are arranged on the same side of the heat dissipation substrate, thereby increasing the thickness of the heat dissipation substrate and improving the heat dissipation efficiency of the low-beam module and the high-beam module. After adopting this design, in order not to reduce the size of the high-beam reflector cup to meet the high-beam light distribution light type and avoid the reliability problem of the high-beam reflector cup being too close to the high-beam light source and causing the temperature to rise, it is necessary to increase the distance between the high-beam reflector cup and the lens unit as much as possible, but this also leads to the problem of increasing the length of the entire headlight. Summary of the invention

[0003] The present invention aims at the problems existing in the prior art and provides a dual-light lens headlight which increases the size of a high-beam reflector cup and reduces the distance between a high-beam light source and a lens unit, thereby ensuring the reliability of the headlight and reducing the overall length of the headlight.

[0004] In order to solve the above technical problems, the technical solution of the present invention is:

[0005] A dual-beam lens headlight comprises: a first heat dissipation bracket, a low beam module and a high beam module arranged on the same side of the first heat dissipation bracket, a shading device corresponding to light outlets of the low beam module and the high beam module, a second heat dissipation bracket arranged in front of the first heat dissipation bracket along the light path, and a lens unit arranged at one end of the second heat dissipation bracket away from the first heat dissipation bracket, the high beam module comprises a high beam light source and a high beam reflector cup, the high beam reflector cup comprises an elliptical surface and a spherical surface arranged in sequence from the vertex to the light outlet, one of the foci of the elliptical surface coincides with the center of the spherical surface, the position of the high beam light source corresponds to the center of the spherical surface, a part of the light emitted by the high beam light source is reflected by the elliptical surface and then emitted to form a high beam, and the other part is reflected by the spherical surface and then returned to the light source surface of the high beam light source for re-excitation.

[0006] Furthermore, an angle formed by the elliptical surface and the light emitting surface of the high-beam light source is no greater than 130 degrees.

[0007] Furthermore, the angle formed by the light beam reflected by the high-beam light source through the ellipsoidal surface and another focus of the ellipsoidal surface different from the center of the spherical surface is no greater than 45 degrees.

[0008] Furthermore, the low beam light source and the high beam light source are at the same distance from the lens unit.

[0009] Furthermore, the lens unit includes a first lens for emitting light from the low beam module and a second lens for emitting light from the high beam module.

[0010] Furthermore, it also includes a direct-light module installed on the second heat dissipation bracket and a direct-light heat dissipation module corresponding to the direct-light module, the direct-light module does not block the light projected from the low beam module and the high beam module to the lens unit, and the lens unit also includes a third lens for emitting light from the direct-light module.

[0011] Furthermore, the cross-section of the second heat dissipation bracket is annular, and a mounting platform is provided on the inner side thereof, and the direct emission module is arranged on the mounting platform.

[0012] Furthermore, the direct heat dissipation module includes a plurality of heat dissipation fins arranged on the side of the mounting platform different from the direct light source and a heat dissipation fan corresponding to the heat dissipation fins, a horizontal cover plate is provided on the first heat dissipation bracket, the heat dissipation fan is provided on the horizontal cover plate, and a plurality of ventilation holes corresponding to the heat dissipation fan are provided on the horizontal cover plate.

[0013] Furthermore, the direct-light module includes one direct light source or multiple direct light sources and collimating lenses corresponding to the direct light sources one by one, the multiple direct light sources are controlled individually, and the number of the third lenses is the same as the direct light sources and corresponds to the direct light sources one by one.

[0014] Furthermore, an adjustment space is provided between the outer periphery of the lens unit and the second heat dissipation bracket.

[0015] A dual-light lens vehicle lamp provided by the present invention comprises: a first heat dissipation bracket, a low beam module and a high beam module arranged on the same side of the first heat dissipation bracket, a shading device corresponding to light outlets of the low beam module and the high beam module, a second heat dissipation bracket arranged in front of the first heat dissipation bracket along the light path, and a lens unit arranged at one end of the second heat dissipation bracket away from the first heat dissipation bracket, the high beam module comprises a high beam light source and a high beam reflector cup, the high beam reflector cup comprises an elliptical surface and a spherical surface arranged in sequence from the vertex to the light outlet, one of the foci of the elliptical surface coincides with the center of the spherical surface, the position of the high beam light source corresponds to the center of the spherical surface, a part of the light emitted by the high beam light source is reflected by the elliptical surface and then emitted to form a high beam, and the other part is reflected by the spherical surface and then returned to the light source surface of the high beam light source for re-excitation. By providing a high-beam reflector cup including an elliptical surface and a spherical surface, a portion of the light emitted by the high-beam light source is reflected by the elliptical surface and then projected onto the lens unit for emission, and the other portion of the light is projected onto the spherical surface and can be reflected back to the high-beam light source for re-excitation, thereby improving the luminous brightness of the high-beam light source; in addition, the high-beam reflector cup using this structure not only does not need to reduce the size of the high-beam reflector cup, but also reduces the distance between the high-beam light source and the lens unit, thereby improving the reliability of the headlight while reducing the overall length of the headlight. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an LED high and low beam integrated automobile headlamp in the prior art;

[0017] Figure 2 is an overall structural diagram of a dual-light lens vehicle lamp in a specific embodiment of the present invention;

[0018] Figure 3 is a structural exploded diagram of a dual-light lens vehicle lamp in a specific embodiment of the present invention;

[0019] Figure 4a , 4b is a structural diagram of a second heat dissipation bracket in a specific embodiment of a dual-light lens vehicle lamp of the present invention;

[0020] Figure 5 The diagram is a light path diagram of a dual-light lens vehicle lamp high-beam module of the present invention.

[0021] Figure 1 As shown in: 1. Low beam LED light source module; 2. High beam LED light source module; 4. Lens;

[0022] Figure 2-5As shown in: 10, first heat dissipation bracket; 20, low beam module; 210, low beam light source; 220, low beam reflector cup; 30, high beam module; 310, high beam light source; 320, high beam reflector cup; 321, elliptical surface; 322, spherical surface; 40, second heat dissipation bracket; 410, mounting platform; 420, positioning ring; 50, direct-emitting module; 510, direct-emitting light source; 520, collimating lens; 60, lens unit; 610, first lens; 620, second lens; 630, third lens; 710, heat dissipation fin; 720, heat dissipation fan; 80, shading device; 810, first shading member; 820, second shading member; 830, drive motor; 90, horizontal cover; 910, vent; 101, aluminum profile heat sink; 102, fan. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 2-5As shown, a dual-light lens headlight comprises: a first heat dissipation bracket 10, a low beam module 20 and a high beam module 30 arranged on the same side of the first heat dissipation bracket 10, a shading device 80 corresponding to the light outlets of the low beam module 20 and the high beam module 30, a second heat dissipation bracket 40 arranged in front of the first heat dissipation bracket 10 along the light path, and a lens unit 60 arranged at an end of the second heat dissipation bracket 40 away from the first heat dissipation bracket 10, the high beam module 30 comprises a high beam light source 310 and a high beam reflector The high-beam reflective cup 320 includes an elliptical surface 321 and a spherical surface 322 arranged in sequence from the vertex to the light outlet. One of the focuses of the elliptical surface 321 coincides with the center of the spherical surface 322. The position of the high-beam light source 310 corresponds to the center of the spherical surface 322. A part of the light emitted by the high-beam light source 310 is reflected by the elliptical surface 321 and then emitted to form the high-beam light. The other part is reflected by the spherical surface 322 and then returns to the light source surface of the high-beam light source 310 for re-excitation. Specifically, the low-beam module 20 includes a low-beam light source 210 and a low-beam reflective cup 220 corresponding to the low-beam light source 210. The low-beam reflective cup 220 is an elliptical surface and includes two focuses. The low-beam light source 210 corresponds to one of the focuses. The light emitted by the low-beam reflective cup 220 is reflected by the low-beam reflective cup 220 and then distributed by the shading device 80 and then projected onto the lens unit 60 to form the low-beam light distribution. The high-beam reflector cup 320 is divided into two parts, wherein the side close to the vertex O is an elliptical surface 321, and the side close to the light outlet is a spherical surface 322, and one of the focuses of the elliptical surface 321 coincides with the center of the spherical surface 322, and the high-beam light source 310 is located at the center of the sphere. A part of the light emitted by the high-beam light source 310 is projected onto the elliptical surface 321, and the light reflected by the elliptical surface 321 is distributed by another focus of the elliptical surface 321 and the shading device 80 and then projected onto the lens unit 60 to form a high-beam light distribution; another part of the light emitted by the high-beam light source 310 is projected onto the spherical surface 322, and returns to the light source surface after being reflected by it. Since the high-beam light source 310 adopts an LED light source or a laser light source, it includes a fluorescent powder sheet, and the light reflected back by the spherical surface 322 is re-excited by the fluorescent powder sheet and then emitted through the elliptical surface, so that the light can be repeatedly used to avoid waste, and the luminous brightness of the high-beam light source 310 is improved at the same time. Since the high beam reflector cup 310 in this article has a spherical surface 322 on the side close to the light outlet, the light will not be projected onto the lens unit 60. Therefore, it is possible to simultaneously meet the requirements of not reducing the size of the high beam reflector cup 320 and reducing the distance between the high beam light source 310 and the lens unit 60, thereby improving the reliability of the headlight while reducing the overall length of the headlight.

[0025] like Figure 3As shown, the lens unit 60 includes a first lens 610 for emitting light from the low beam module 20 and a second lens 620 for emitting light from the high beam module 30. Since the low beam module 20 and the high beam module 30 are located on the same side of the first heat dissipation bracket 10, that is, the low beam module 20 and the high beam module 30 are arranged along the width direction of the headlight, the first lens 610 and the second lens 620 are also arranged along the width direction of the headlight.

[0026] Preferably, the angle formed by the elliptical surface 321 and the light emitting surface of the high beam light source 310 is not greater than 130 degrees. Figure 3 As shown, with the high beam light source 310 as the vertex, the angle θ formed between the elliptical surface 321 and the high beam light source 310 is not greater than 130 degrees. For example, if θ is 110°, compared with the existing high beam reflector cup, the present application reduces the size of the angle θ, which can not only make the high beam module 30 closer to the lens unit 60 and reduce the length of the entire headlight, but also reduce the height of the second lens 620 in the lens unit 60 by reducing the angle θ, thereby reducing the height and volume of the lens unit 60 and the entire headlight.

[0027] like Figure 5 As shown, the light beam of the high beam light source 310 reflected by the elliptical surface 321 and another focus P of the elliptical surface 321 different from the center of the spherical surface 322 2 The formed angle β is no greater than 45 degrees, which can also reduce the height of the second lens 620 in the lens unit 60, thereby reducing the height and volume of the lens unit 60 and the entire vehicle lamp.

[0028] Preferably, in this embodiment, the opening side of the high beam reflector cup 320 is tilted upward relative to the vertex side, so that more light emitted from the elliptical surface 321 can be projected onto the second lens 620 for emission, thereby increasing the brightness of the emitted light.

[0029] Preferably, the distances between the low beam light source 210 and the high beam light source 310 and the lens unit 60 are the same. Through the special design of the high beam reflector cup 320 in the present application, the low beam light source 210 and the high beam light source 310 can be arranged in parallel along the width direction of the headlight without increasing the distance between the high beam light source 310 and the lens unit 60, thereby further reducing the length and volume of the entire headlight.

[0030] Preferably, the dual-light lens headlight further includes a direct-emission module 50 mounted on the second heat dissipation bracket 40 and a direct-emission heat dissipation module corresponding to the direct-emission module 50, wherein the direct-emission module 50 does not block the light projected from the low beam module 20 and the high beam module 30 to the lens unit 60, and the lens unit 60 further includes a third lens 630 for emitting the light of the direct-emission module 50. In this embodiment, the second heat dissipation bracket 40 is made of aluminum material with high thermal conductivity, fast heat conduction, and light material, and of course, it can also be made of other heat-conducting materials. The direct-emission module 50 is arranged on the second heat dissipation bracket 40, and the heat generated by the direct-emission module 50 is guided out through the second heat dissipation bracket 40, thereby increasing the heat conduction channel area of ​​the direct-emission module 50, and the direct-emission heat dissipation module is arranged to dissipate heat for the direct-emission module 50 separately, without sharing the first heat dissipation bracket 10 with the low beam module 20 and the high beam module 30 for heat dissipation, thereby greatly improving the heat dissipation efficiency. In addition, the direct-emission module 50 and the lens unit 60 are simultaneously mounted on the second heat dissipation bracket 40 , and there is no need to separately set up a mounting bracket and mounting space for the direct-emission module 50 , thereby effectively reducing production costs, installation complexity, and the volume of the entire vehicle lamp.

[0031] Preferably, the direct-light module 50 includes one or more direct-light sources 510. When there are multiple direct-light sources 510, the multiple direct-light sources 510 are controlled separately, and there are multiple third lenses 630, which correspond to the direct-light sources 510 one by one. In one case, there is one direct-light source 510, and there is one third lens 630, which corresponds to the position of the direct-light source 510. In the low-beam state or the high-beam state, the direct-light source 510 is turned on for fill-in light according to actual needs. In another case, there are two direct light sources 510. In this case, there are also two third lenses 630, which correspond one to one with the direct light sources 510. LED light sources or laser light sources are used, and the brightness of the two direct light sources 510 is different. In the low beam state, one of the direct light sources 510 is turned on for fill-in light. In the high beam state, the other direct light source 510 is turned on for fill-in light. The other direct light source 510 is used to fill-in light for the high beam module 30. The two direct light sources 510 can also be turned on at the same time to fill-in light for the low beam state or the high beam state, thereby increasing the brightness of the central light spot. In another case, there are three direct light sources 510. The corresponding third lenses 630 are also provided in three, which correspond one to one with the direct light sources 510. Figure 3As shown, the direct light source 510 can be an LED light source or a laser light source, and the brightness and divergence angle of the three direct light sources 510 can be the same or different. For example, the direct light source 510 in the middle and the direct light sources 510 on the sides use different light sources. When in the low beam state, the direct light source 510 in the middle is turned on for fill light, and when in the high beam state, the direct light sources 510 on the sides are turned on for fill light. The above-mentioned fill light methods are only examples, and of course other methods can also be used to control the opening and closing of multiple direct light sources 510 to achieve the desired effect.

[0032] Preferably, the direct-light module 50 further includes a collimating lens 520 disposed between the direct-light source 510 and the lens unit 60. The collimating lens 520 corresponds to the direct-light source 510 one-to-one and is used to collimate the light beam emitted by the direct-light source 510 to achieve a focusing effect and improve the brightness of the direct light beam. When there are multiple direct-light sources 510, there are also multiple collimating lenses 520, which can be fixed separately or integrally formed, such as Figure 3 shown.

[0033] like Figure 4a As shown, the cross section of the second heat dissipation bracket 40 is annular, and a mounting platform 410 is provided inside the second heat dissipation bracket 40, and the direct-emitting module 50 is provided on the mounting platform 410. The second heat dissipation bracket 40 is an annular bracket with openings at both ends, and a mounting platform 410 for mounting the direct-emitting module 50 is provided on one side inside the second heat dissipation bracket 40. The annular structure of the second heat dissipation bracket 40 can greatly increase the heat conduction area and further improve the heat dissipation efficiency. The mounting platform 410 is a beam structure formed by vertically extending from one side inside the second heat dissipation bracket 40, and the beam structure does not block the light transmitted from the low beam module 20 and the high beam module 30 to the lens unit 60.

[0034] like Figure 4b As shown, the direct-emission heat dissipation module includes a plurality of heat dissipation fins 710 disposed on the side of the mounting platform 410 different from the direct-emission module 50. The heat dissipation fins 710 are located behind the direct-emission module 50 and are used to quickly dissipate heat from the direct-emission module 50. Preferably, the direct-emission heat dissipation module also includes a heat dissipation fan 720 corresponding to the heat dissipation fins 710, a horizontal cover plate 90 is provided on the first heat dissipation bracket 10, the heat dissipation fan 720 is provided on the horizontal cover plate 90, and a plurality of vents 910 corresponding to the heat dissipation fan 720 are provided on the horizontal cover plate 90. It can be seen that in this embodiment, the direct-emission module 50 is cooled by a combination of the second heat dissipation bracket 40, the heat dissipation fins 710 and the heat dissipation fan 720, and the heat dissipation efficiency of the direct-emission module 50 can be increased by more than 50% compared with the installation method in the prior art.

[0035] Preferably, the lens unit 60 is arranged at one end of the second heat dissipation bracket 40 away from the first heat dissipation bracket 10, and adjustment space is provided around the lens unit 60 and between the second heat dissipation bracket 40. In this embodiment, the lens unit 60 is installed at the front end of the second heat dissipation bracket 40 along the optical path, and the two are fixed by glue, and there is a gap between the outer circumference of the lens unit 60 and the second heat dissipation bracket 40. After the assembly of the headlight is completed, due to the installation error of the optical components, a dimming process is required. At this time, the relative position between the lens unit 60 and the second heat dissipation bracket 40 is adjusted so that the emitted light spot meets the set light distribution requirements. After the dimming process is completed, the relative position of the lens unit 60 and the second heat dissipation bracket 40 is fixed. Compared with the existing headlights that need to adjust multiple components such as the light source module, the direct module, and the lens module during the dimming process, this solution only needs to adjust the position of the lens unit 60, without adjusting multiple components, which is simpler to operate and more efficient.

[0036] In this embodiment, the end of the second heat dissipation bracket 40 corresponding to the lens unit 60 is further provided with a positioning ring 420 for fixing the lens unit 60. After the position of the lens unit 60 is fixed, the positioning ring 420 is mounted on the second heat dissipation bracket 40 from one end of the lens unit 60 to prevent the lens unit 60 from shifting relative to the second heat dissipation bracket 40, thereby ensuring assembly accuracy.

[0037] Preferably, the shading device 80 includes a first shading member 810 and a second shading member 820 which correspond one-to-one to the light outlets of the low beam module 20 and the high beam module 30, that is, the first shading member 810 corresponds to the light outlet of the low beam module 20, and the second shading member 820 corresponds to the light outlet of the high beam module 30. In this embodiment, the first shading member 810 and the second shading member 820 can be installed separately, or the shading sheets therein can be connected as one and controlled by the same driving motor 830. The shading sheets of the first shading member 810 and the second shading member 820 are both arc-shaped structures and the upper edges have a cut-off line shape that meets the low beam light type.

[0038] Preferably, the low beam light source 210 can be an LED light source, and the high beam light source 310 can be an LED light source, or a laser light source, that is, a combination of a semiconductor laser and a phosphor sheet, wherein the phosphor sheet is arranged at one of the focal points of the high beam reflective cup 320, and a through hole is provided on the high beam reflective cup 320 for passing the laser beam emitted by the semiconductor laser.

[0039] Preferably, the dual-light lens headlight further comprises a heat dissipation module disposed on a side of the first heat dissipation bracket 10 away from the second heat dissipation bracket 40 , and the heat dissipation module comprises an aluminum profile heat sink 101 and a fan 102 for dissipating heat from the low-beam light source 210 and the high-beam light source 310 .

[0040] Although the embodiments of the present invention are described in the specification, these embodiments are only for reference and should not limit the protection scope of the present invention. Various omissions, substitutions and changes within the scope of the present invention should be included in the protection scope of the present invention.

Claims

1. A dual-light lens headlight, characterized in that: include: A first heat dissipation bracket, a low beam module and a high beam module arranged on the same side of the first heat dissipation bracket, a shading device corresponding to the light outlets of the low beam module and the high beam module, a second heat dissipation bracket arranged in front of the first heat dissipation bracket along the optical path, and a lens unit arranged at one end of the second heat dissipation bracket away from the first heat dissipation bracket, the high beam module includes a high beam light source and a high beam reflector cup, the high beam reflector cup includes an elliptical surface and a spherical surface arranged in sequence from the vertex to the light outlet, one of the foci of the elliptical surface coincides with the center of the spherical surface, the position of the high beam light source corresponds to the center of the spherical surface, a part of the light emitted by the high beam light source is reflected by the elliptical surface and then emitted to form a high beam, and the other part is reflected by the spherical surface and then returns to the light source surface of the high beam light source for re-excitation.

2. The dual-light lens vehicle lamp according to claim 1, characterized in that: An included angle formed by the elliptical surface and the light emitting surface of the high beam light source is no greater than 130 degrees.

3. The dual-light lens vehicle lamp according to claim 1, characterized in that: The angle formed by the light beam reflected by the ellipsoidal surface from the high beam light source and another focus of the ellipsoidal surface different from the center of the spherical surface is no greater than 45 degrees.

4. The dual-light lens vehicle lamp according to claim 1, characterized in that: The low beam light source and the high beam light source are at the same distance from the lens unit.

5. The dual-light lens vehicle lamp according to claim 1, characterized in that: The lens unit includes a first lens for emitting light from the low beam module and a second lens for emitting light from the high beam module.

6. The dual-light lens vehicle lamp according to claim 1, characterized in that: It also includes a direct-light module installed on the second heat dissipation bracket and a direct-light heat dissipation module corresponding to the direct-light module. The direct-light module does not block the light projected from the low-beam module and the high-beam module to the lens unit. The lens unit also includes a third lens for emitting light from the direct-light module.

7. The dual-light lens vehicle lamp according to claim 6, characterized in that: The cross section of the second heat dissipation bracket is annular, and a mounting platform is provided on the inner side thereof, and the direct emission module is arranged on the mounting platform.

8. The dual-light lens vehicle lamp according to claim 7, characterized in that: The direct heat dissipation module includes a plurality of heat dissipation fins arranged on the side of the mounting platform different from the direct light source and a heat dissipation fan corresponding to the heat dissipation fins. A horizontal cover plate is provided on the first heat dissipation bracket, and the heat dissipation fan is provided on the horizontal cover plate. The horizontal cover plate is provided with a plurality of ventilation holes corresponding to the heat dissipation fan.

9. The dual-light lens vehicle lamp according to claim 6, characterized in that: The direct-light module includes one direct-light source or multiple direct-light sources and collimating lenses corresponding to the direct-light sources one by one. The multiple direct-light sources are controlled separately. The number of the third lenses is the same as that of the direct-light sources and corresponds to the direct-light sources one by one.

10. The dual-light lens vehicle lamp according to claim 1, characterized in that: An adjustment space is provided between the outer periphery of the lens unit and the second heat dissipation bracket.

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